package com.sky.aspect;


import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autofillpoint(){}

     @Before("autofillpoint()")
    public void autofill(JoinPoint joinPoint){
        log.info("公共字段开始填充");

         MethodSignature signature = (MethodSignature) joinPoint.getSignature();//获得签名
         AutoFill autofill = signature.getMethod().getAnnotation(AutoFill.class);
         OperationType operationType = autofill.value();

         Object[] args = joinPoint.getArgs();
         if (args == null || args.length == 0){
             return;
         }
         Object entity = args[0];

         LocalDateTime now = LocalDateTime.now();
         Long currentId = BaseContext.getCurrentId();

         if (operationType == OperationType.INSERT){
             try {
                 Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER,Long.class);
                 Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME,LocalDateTime.class);
                 Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);
                 Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);

                 setCreateUser.invoke(entity, currentId);
                 setCreateTime.invoke(entity,now);
                 setUpdateUser.invoke(entity,currentId);
                 setUpdateTime.invoke(entity,now);
             } catch (Exception e) {
                 throw new RuntimeException(e);
             }
         }else if (operationType == OperationType.UPDATE){
             try {
                 Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
                 Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                 setUpdateUser.invoke(entity,currentId);
                 setUpdateTime.invoke(entity,now);
             } catch (Exception e) {
                 throw new RuntimeException(e);
             }




         }

     }
}
